.clearfix::after{
	content: "";
	clear: both;
	display: block;
}
body{
	position: relative;
	padding: 0;
	margin: 0;
	background: url(../img/demoBg.jpg) no-repeat scroll center top;
	background-size: 100%;
}
.button{
	/*border: 1px solid #000;*/
	width: 200px;
	height: 180px;
	position: absolute;
	top: 270px;
	left: 0;
	right: 0;
	margin: auto;
}
.button #easy,#middle,#hard{
	width: 100%;
	height: 30px;
	margin-bottom: 60px;
}
#num{
	position: absolute;
	left: 24px;
	right: 0;
	margin: auto;
}
.page1 h3{
	text-align: center;
	color: #fff;
	font-size: 28px;
}
.page1 #num{
	
}
.result #back{
	float: right;
}

